[Bug debug/58315] [4.9/5 Regression] Excessive memory use with -g

[aoliva at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58315

--- Comment #36 from Alexandre Oliva <aoliva at gcc dot gnu.org> ---
Created attachment 36472
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36472&action=edit
backported patch for the 4.9 branch

Chris,

retbnd is of no concern, nothing equivalent existed back then.

call_stmt was called gimple_call.

Here's a backported patch, barely tested.  Please let me know how it goes for
you.